中国电力 ›› 2016, Vol. 49 ›› Issue (4): 27-31.DOI: 10.11930/j.issn.1004-9649.2016.04.027.05

• 电网 • 上一篇    下一篇

提高电能表现场校验仪抵御温度干扰能力的技术

李作锋1,黄奇峰2,3,郑爱霞2,3,杨世海2,3,周赣4,陈铭明2,3,赵双双2,3   

  1. 1. 国网江苏省电力公司,江苏 南京 210024;
    2. 江苏省电力公司电力科学研究院,江苏 南京 211103;
    3. 国家电网公司电能计量重点实验室,江苏 南京 210019;
    4. 东南大学 电气工程学院,江苏 南京 210096
  • 收稿日期:2015-05-08 出版日期:2016-04-20 发布日期:2016-04-27
  • 作者简介:李作锋(1964-),男,山东淄博人,硕士,高级经济师,从事营销领域的技术和管理工作。E-mail: hqfyqhqy@126.com
  • 基金资助:
    国家自然科学基金资助项目(51207020); 国家电网公司科技项目(5210EF140008)

Technology Research on Improving Anti-temperature Interference for Watt-hour-meter Field Calibrator

LI Zuofeng1, HUANG Qifeng2,3, ZHENG Aixia2,3, YANG Shihai2,3, ZHOU Gan4, CHEN Mingming2,3, ZHAO Shuangshuang2,3   

  1. 1. State Grid Jiangshu Electric Power Company, Nanjing 210024, China;
    2. Electric Power Research Institute, Jiangsu Electric Power Company, Nanjing 211103, China;
    3. Key Laboratory of Electric Energy Metering, State Grid Corporation, Nanjing 210019, China;
    4. School of Electrical Engineering, Southeast University, Nanjing 210096, China
  • Received:2015-05-08 Online:2016-04-20 Published:2016-04-27
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No. 51207020) and Science and Technology Project of SGCC (No. 5210EF140008).

摘要: 受高低温环境温度的影响,电能表现场校验仪的现场测量精度可能会显著下降,无法做出正确检定。通过对电能表现场校验仪的测量原理和硬件结构的深入分析,揭示了高低温环境对校验仪测量精度的影响机理,提出了一种基于关键元器件温漂系数综合优化的改进方案,并研制了样机。试验结果表明,在-30~55 ℃,样机均能够保持0.05S级准确度,平均温度系数不超过0.08/℃。

关键词: 电能表, 校验仪, 现场, 温度, 干扰

Abstract: Influenced by high or low environment temperature, measurement accuracy of watt-hour-meter calibrator may decrease significantly and unable to calibrate correctly. Based on measuring principle and hardware structure of watt-hour-meter field calibrator, mechanism of environment temperature influence on measurement accuracy is analyzed. A novel hardware improvement scheme is proposed based on temperature coefficients optimization of key electronical components. The experimental results on prototype equipment show that average temperature coefficient is less than 0.08/℃. The prototype meets 0.05S measuring precision in temperature ranging from -30 ℃ to 55 ℃.

Key words: watt-hour meter, calibrator, field, temperature, interference

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